/*
 * Copyright 2009 Jonas Ådahl.
 * Copyright 2011 Florian Schmaus
 *
 * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jivesoftware.smackx.provider;

import java.io.IOException;

import org.jivesoftware.smack.packet.PacketExtension;
import org.jivesoftware.smack.provider.PacketExtensionProvider;
import org.jivesoftware.smackx.entitycaps.packet.CapsExtension;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

public class CapsExtensionProvider implements PacketExtensionProvider {
	public PacketExtension parseExtension(XmlPullParser parser)
			throws XmlPullParserException, IOException {
		// Original implementation by jonas
		// boolean done = false;
		// int startDepth = parser.getDepth();
		//
		// String hash = parser.getAttributeValue(null, "hash");
		// String node = parser.getAttributeValue(null, "node");
		// String ver = parser.getAttributeValue(null, "ver");
		//
		// // Make the parser
		// while (true) {
		// int eventType = parser.next();
		//
		// if (eventType == XmlPullParser.END_TAG &&
		// parser.getDepth() == startDepth)
		// break;
		// }
		//
		// if (hash != null && node != null && ver != null) {
		// return new CapsExtension(node, ver, hash);
		// }
		// else {
		// //throw new XMPPException("Malformed caps element.");
		// // Malformed, ignore it
		// return null;
		// }

		boolean done = false;
		String hash = null;
		String version = null;
		String node = null;
		while (!done) {
			if (parser.getEventType() == XmlPullParser.START_TAG
					&& parser.getName().equalsIgnoreCase("c")) {
				hash = parser.getAttributeValue(null, "hash");
				version = parser.getAttributeValue(null, "ver");
				node = parser.getAttributeValue(null, "node");
			}

			if (parser.getEventType() == XmlPullParser.END_TAG
					&& parser.getName().equalsIgnoreCase("c")) {
				done = true;
			} else {
				parser.next();
			}
		}
		return new CapsExtension(node, version, hash);
	}
}
